D *14.26 Use the information in Fig. 14.10 to obtain the transfer function of a second-order low-pass filter that just meets the specifications defined in Fig. 14.3 with ωp = 1 rad/s and Amax = 3 dB. Find ω0 and Q. Also, if ωs = 2 rad/s, find the value of Amin obtained. Investigate two cases: (a) maximally flat passband and, (b), equiripple passband.
1 rad/s, , 12.3 dB; (b) 0.8427 rad/s, 1.3, 17 dB